Devices for damping the rolling movement of ships



June 28,- 1960 w. M. KOLLENBERGER 2,942,570

DEVICES FOR DAMPING THE ROLLING MOVEMENT OF' SHIPS I Filed Oct. l1. 1955 5 Sheets-Sheet 1 A-r-ToR/veys 5 Sheets-Sheet 2 June 28, 1960 w. M. KOLLENBERGER DEVICES FOR DAMPING THE ROLLING MOVEMENT oF SHIPS Filed oct. 11, 1955 June 28, 1960 w. M. KoLLl-:NBERGER 2,942,570

DEVICES FOR DAMPING THE ROLLING MOVEMENT 0F SHIPS Filed Oct. 11, 1955 5 Sheets-Sheet 3 June 28, 1960 w. M. KOLLENBERGER 2,942,570

DEVICESFOR DAMPING THE ROLLING MOVEMENT OF' SHIPS 5 Sheets-Sheet 4 Filed Oct. 11, 1955 /lrronnle ys AJanne 28, 1960 w. M. KOLLENBERGER 2,942,570

DEVICES FOR DAMPING THE ROLLING MOVED/ENT OF' SHIPS Filed Oct. 1l, 1955 5 Sheets-Sheet 5 INVENTOR. WALTER MICHAEL KOLLENBERGER ATTORN EY-S Mmmm., t.

face.

nited States Patent@ MENT OF SHIPS Walter Michael Kollenberger, Rosenhagenstrasse 34,

Hamburg-Othmarschen, Germany Filed oct. 11, 195s, ser. N0. 539,858 f claims pribrify, appliation Germany oct. 13, 1954 z claims. (ci. 114-126) improved stabilizer assembly which isA rotatable vertical-v ly to and from an operative position with respect to a ships hull and which is positively guided during such vertical rotation so that the stabilizing surfaces thereof will beheld at a constant angle of incidence.

Y A further objectl of the inyention is to provide novel and .improved means to support the stabilizing surfaces of a ships stabilizer assembly against rotation around a longitudinal axis while said surfaces are being moved to or from an elevated inoperative housed position with respect to the ships hull. v

.A still further object of the invention is to provideimproved means to lock the st b-ilizing surfaces of a stabiliz'erl assembly for a ships hul at a constant angle of incidence while said stabilizing surfaces are in positions other than their operating position, namely, either when said stabilizing surfacesarein a housed elevated position in the ships hull or are being raised! or lowered toward or from said housed elevated position. .Further objects and advantages of the invention will become lapparent from the following description and claims and from the accompanying drawings, wherein: v f'Fig. l .s a view of a chamber serving to accommodate wards the ship. v Figf4 shows a device for loweringra stabilising sur- Fig. 5` shows a stabiliserchamber with the stabilizing surface rocked outwards.

Fig. 6 showsV a stabiliser chamber with surface rocked inwards. v

Fig. 7 is a section taken along the line A-B in Fig. 5. Fig. 8 is a section taken along the line C-D in Fig. 5. Fig. 9 is a view of a modified embodiment of a rocking device with the stabilising surface in the operative position, viewed in the longitudinal direction of the ship.

,'Fig. 10 is a plan view of the damping device according to Fig. 9 with the two positions, ie., operative position and position of rest, of the stabilising surface.

Fig. ll is a side view of Fig. 9 looking towards the ship.V

lFigure l2 is `a side elevational view of the stabilizer the stabilising vDEVICES FOR DAMPING THE ROLLING MOVE- 5 'a stabiLiZingsurfaCe, with a stabilizing surface Ylowered i, into operative position, viewed in the longitudinal direcp tion of the ship. v v Y Fig. 2 is a plan view of the complete damping device.

{Fig} 3 is a view of the damping device looking to- .2 A Y by means of a continuously running electric motor 1 through the medium of a reversing magneto-coupling 2 and a transmission gear 3. An intermediately disposed brake 5 having a brake-releasing magnet 6 ensures that the stabilising surface 4 is securely held in the corresponding position when the coupling 2 is disconnected.

Upon connection of the magneto-coupling 2 the brake 5 is lifted automatically by the ,brake-releasing magnet 6 and thus releases the stabilising surface 4 `for further angular movement backwards or forwards. Actuation of the stabilising surface takes place by means of a gyroscope, i.e., a so-called anti-roll gyroscope (not shown), viz., in consecutive fashion and in opposite directions, so that the stabilising surface 4receives alternately a positive and a negative adjustment according to the movement of the ship. Y l

Disconnection of the magneto-coupling 2 occurs as a result of the position of the stabilising surface 4, there being located on the driven shaft 20 of lthe gear 3 a contact segment 7 having a plurality Vof contacts, only one of which isV made to be effective on each particular occasion, which contact when moving against a fixed cooperating contact 8 interrupts the current to the magneto-coupling 2. A

VAdjustment of the desired angle of incidence of the stabilising surface also takes place by means of a-gyro.- scope, the sameV terminating the angular movement of the stabilising surface 4 in accordance with the angle of roll of the ship. To simplify the installation and to avoid the use o f a second gyroscope, adjustment of the-desiredl means is effected by a crank 13 connected to the shaft l 20 by way of a slide member 14 rotatably secured to the crank 13 and effecting transmission to a forked lever 15 and to the stabiliser shaft 1'6. ,y

On the forked lever 15 land lon the stabiliser shaft 16 there are located two parallel yoke pieces 17, between which there moves the slide member 14 upon the lowering or lifting of the stabilising surface, andwhichf ensure that the stabilising surfaces will be lifted andlowered at a constant angle of inoidence,.which is preferably approximately 0.

The lifting andfvlo'wering of the stabilising surface 4 takes place with 'the aid of two plungers V9 which are moved by oil under pressure in cylinders 1,0 and by way of a lever 11 cause the angularmovem'ent of a rocking by means of its shaft 16.vr Since thesame ends of the two cylinders are connected with each other by means assembly of Figure l, with parts broken away to show details of construction. Y

LFigure 13 is a top plan view of the structure illustrated vin Figure 12.

of pipe lines, the same pressure will be exerted on the two plungers, whereby a completely even angular movement of the rocking shaft 12 is ensured.

Y In the lowered or lifted position of the stabilising surface the oil on bothsides of the plunger 9 forms a buffer owing to the closing of the pipe lines, and it thus ensures a perfectly rigid positioning of the rocking shaft 12.

The cylinders 10 are supplied with oil Vunder pressure by'an electrically driven oil pump (not shown). The electrical connection ofthe oil pump motor and of the electric motor 1 is so arranged that the two motors cannot be switched on simultaneously, ie., the electric motorvr 1 upon the lowering of the stabilising surface may only f be switched on when the stabiliser shaft 16 is 4in a horizontal position and the oil pump motor has again been switched off. On the other hand when .the stabilising surface 4 has been lifted, theV latter must again be in a Patented ,lune 28, 1960 liorizontat positiorrwitirtlre electricmotor 1 disconnected before the oil pump motor can be switched on.

, In .'r ler. ;t V Qbtainzfavoiifable conditions of flow the la "e re` fe ,shi'fs side' necessary for lifting' s t g` surface is'- verd not only`i`n` f rest but also iii' th'operatve position of Ya rlis means'jof a slide member 18 whilst in' addition within' th' stabiliser chamber',` preferably inthe vicinity of the outer wallg there is scoured tovthe arnitl disc 19 fo1" the" purpose of g as completely as possible;44 i 'i thejuemb'olrment; aoco g1 to Figs. 9:11 there have" been" employed solfi" as tlfe' par-t'sv of the op'eratir'lg'V means arefoiicerried't'h sf "se: fferc nu'niralsl as in' the emb'odirn' r g t'o1Fig`s.l "-S'. l

The sta h slrrgs fa e ZZ'Linount'ed tobe angularly fioyable' on rook slffaft 21 isfro'cked by means of a worm gear 23 by angle of approximately 90 out of the position of rest within the chamba-24, which is disi posed in the longifudir'ial'direc'tion of the ship',- into the position of operation; and' vice versa', the rocking move-V ine'nt taking place' in a horizontal plane. VThe shaft 21 thereby turns inthe bearings" 25 and 26, which takev over the Vconsidrable driv-ihgA- forces `acting on the stabilising s urfaces 22; whilst the worm gear 23 is loaded only by 'the comparatively small forces of resistance resulting from the iiow of waterAVV about the stabilising surface. t9 theieeariofs of the febking shaft bearings 2s, Y26 in .the'vioinity ofthe ships side 27 and on the doublebottom 2 8'tlie `forcs 'eiert'd on therstab'ilis'ing surface 22 are readily transmitted to the hllofth ship.

"vertically by 'a rotating shaft 12 which is rotated by cylinders and levers, while'rthe iinlof Figures 9 to 11 is moved vertically by rotating shaft which is rotated by a worm gear. f

The shaft 12 Vrotates and moves the tin 4 vertically by virtue of the fact that tlie shaft 16` extends longitudinal- 1y through Vthe center-housing of the sha'ft 12. The shaft 16 carries the'iin' and is rotatablyv housed in the center `housing of the shaft 12" (se Figure 2). The shaft 16 is rotatable about its axis to angularly adjust the iin in the operative position` of the stabilizer assembly.

fIn order to permit such riioyment';v the arcuate guide members 17, v17 are connctedto the shaft 115 so as to transmit rotative ifnovenits thereto. To rotate the shaft en f Figures 1 to 4 is 'moved 1 huil and supporting said shaft for rotation around a trans- While certain specific embodiments of an improved ships hull stabilizer assembly have been disclosed in the foregoing description, it will'- be understood that various mod-ications within the spirit of the invention may occur to those skilled in the art Therefore it is intended that no limitations be placed oh th" invention except as de- I claim: i

1 Ini `a stabilizer assembly on a ship hull `ofthe type comprising stabiliziiigsff eaiiinbrs located adjacent the hull, arg't tableisfablli'zihg shaft oii fh' liull supporting said surfc'r'he' "bers,-I aiis to at timesselectively rotatef`saidshaft around its axis in either direction` of rotation, transverse shaft ien's rotatably supporting said stabilizing shaft for rota'tonlround aitrans'verse axis, and

Vmeans to at times rotate said transverse shaft means,

- tween said yoke pices.

Owing 16, the craniiV 13 is provided and is drivingly coupled to 5- the guide members 17, 1 7 by the slide member 14, which is slidably engaged btwn'th'guide elements 17, 17. lWhen the crank- 13 is rotated, the slide member 14` is rotated 4and turns the shaft 16: When Ilthe shaft 12 is rotated, the guide ele nts iriove siidably relativ to the intervening 'slide member 14'.

2. In a stabilizer assembly on a ship hully of the typ comprising stabilizing surface members located adjacent the hull,- a rotatable stabilizing shaft supporting said sur'- face members and rotatably supported on the hull,V a vforked lever on the shaft, crank means rotatably `muted on the hull and drivingly engaged in said forked lever and being constructed and arranged to at times selectively rotate saidy shaft around its airis in either direction of ro"- tation,- transverse-shaft: means rotatably mountedA on the verse axis, and means to at times rotate saidtransverse 'shaft means, whereby to raise and lower said stabilizing surface members; means to insure that the stabilizing surface members will be raised and lowered at a cons tant angle of 'incidence comprising two parallelyoke pieces mounted'on -the stabilizing shaft and the lforked lever, anda slide member mounted on said crank means and slidably, engaged between said yoke pieces.`

'itefere'nc'es Cited in the tile of this patent UNITED STATES PATETS i,4is,33f5 Sperry 'inne 6, im m2151951 Auen Nov. 16. 124s 2,530,725 Pizer Nv. 2 1, 1959 2,595,190 Edwards Apr. 29, 1952 2,616,539 Wttenb'erg'er Nov. 4, i952 y y FoRiirGN PATENTS Y 162,927 Great Britain My "12, V1'92-1 Germany Feb. 11,1939 

